Merge branch 'develop' of https://github.com/qiniu/api into feature/add_fop_new
refactory fop
Update by review
update
add fop/imageExif test
fix fop/imageExif test bug
Update ImageExifRet to map
fix bugs
Merge pull request #12 from chzyer/feature/add_fop_new

Feature/add fop
Merge pull request #16 from chzyer/feature/fix_token_tag

fix bugs
merge